Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Adsorption Characteristics of Cobalt, Strontium, and Cesium on Natural Soil and Kaolin

자연토양 및 카올린에 대한 코발트, 스트론튬, 세슘의 흡착 특성

  • Cheon, Kyeong Ho (Technology Research Lab., KOLON GLOBAL CORP.) ;
  • Choi, Jeong-Hak (Department of Environmental Engineering, Catholic University of Pusan) ;
  • Shin, Won Sik (Department of Environmental Engineering, Kyungpook National University) ;
  • Choi, Sang June (Department of Environmental Engineering, Kyungpook National University)
  • 천경호 (코오롱글로벌(주) 기술연구소) ;
  • 최정학 (부산가톨릭대학교 환경공학과) ;
  • 신원식 (경북대학교 환경공학과) ;
  • 최상준 (경북대학교 환경공학과)
  • Received : 2014.07.08
  • Accepted : 2014.09.11
  • Published : 2014.09.30
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Abstract

In this study, as a fundamental study for the remediation of the radionuclides-contaminated soil, the adsorption of cobalt, strontium, and cesium on natural soil and kaolin were experimently investigated and adsorption characteristics were evaluated by using several adsorption kinetic and isotherm models. The pseudo-first-order kinetic model (PFOM), pseudo-second-order kinetic model (PSOM), one-site mass transfer model (OSMTM), and two compartment first-order kinetic model (TCFOKM) were used to evaluate the kinetic data and the pseudo-second-order kinetic model was the best with good correlation. The adsorption equilibria of cobalt, strontium, and cesium on natural soil were fitted successfully by Redlich-Peterson and Sips models. For kaolin, the adsorption equilibria of cobalt, strontium, and cesium were fitted well by Redlich-Peterson, Freundlich, and Sips models, respectively. The amount of adsorbed radionuclides on natural soil and kaolin was in the order of cesium > strontium > cobalt. It is considered that these results could be useful to predicting the adsorption behaviors of radionuclides such as cobalt, strontium, and cesium in soil environments.

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References

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